I have been and am going through this right now, and I don't really know what the answer is myself.
My dad was a preacher (a good man, very compassionate and sincere). The type of church is quite fundamentalist and very strict; we were not allowed to attend even other Christian churches. The extended family also attends church. My mom has emphysema, or she would still attend; my brother does not attend. For me, as well, to leave the church would be quite a far-reaching decision.
I have not left the church, but I am not currently attending; however, one of the reasons I have not been is that I have been quite seriously ill myself and don't go out alone much. While I am a believer in Jesus, I am not a believer in some of the people who also claim to believe in Him, who will not help the needy, who will judge people harshly without really knowing or caring about their circumstances, who will discourage people from joining their church if they think that they are the "wrong kind of people." (By the way, I am one of those "wrong" people. I am unemployed right now and own nothing of much material value, not even a car.) I am not saying that all churches are like that; the one to which I belong now is not like that (the one I attended before was). The church of which I am a member is very kind and sends us a letter weekly.
Before write any more, here is a disclaimer: I am not a psychologist or psychotherapist. I am not a licensed or ordained minister and I have no training in theology or ministry. All I can tell you is what has helped me.
My faith is in God. I treat my fellow human beings, whether they are street people or government officials, with as much respect as my soul can give, and help them as I can, in recognition that they are all in the image of God. I pray to God for forgiveness of wrongs and help with what I need, and do my best, knowing that I will have what I need, when I need it. I do some eastern-style meditation to center me, and some yoga-type stretches to relax my body. (A relaxed body helps to foster a relaxed mind.) But the bottom line is this: My faith is in God.